Typewriting machine



A ril 20 1926. 1,581,821

J. WALDHEIM TYPEWRITING MACHINE Original Filed Feb. 26. 1921 ln venfor:

Patented Apr. 20, 1926.

UNITED STATES PATENT OFFICE.

WRITER comrnrm or new YORK, 4N. Y.,

A CORPORATION OF -DELAWARE.

TYPEWRITIN G MACHINE.

Original application filed February 26, 1921, Serial No. 448,047. Divided and,thia applicat1on filed October 16, 19241 To all whom it may concern:

Be it known that I, JoIINlVALDHnIM, a citizen of the United States, residing in Elizabeth,in the county of Union and State of New Jersey, haveinvented certain new and useful Improvements in Typewritmg Machines, of which the following is a specification.

The present invention relates to typewrlting machines of the continuous billingva riety, one form of which is set forth in the patent to Wernery and Smith, No..1,132,055', granted March 16, 1915, and provides a means for trimming the side edges of 'a fanfold web used in such machines, thus remedying such objections which have arisen in connection with the use of such webs in machines of this type;

Thefan-fold webs used in continuous billing machines are perforated at their edges to facilitate the folding and the accuratesuperpos ing of the printed forms. When the sheets of the web are separated after typing, the perforations leave a ragged edge which detracts from the general appearance of the bill; Users of fan-fold webs sometimes trim the side edges of the webs before introducing them into the machine. This is objectionable, however, since the separate sheets tend to creep relatively to each other in the operation of feeding them around the platen while typing the forms. It is therefore desirable to trim the side edges of the 'web' in such manneras to provide smooth edges on the separatcisheets without permitting creeping of the sheets. For this purpose there i'smdunted at the rear of the carhon-paper carriage, at each side thereof, a circular cutting blade exterior to the web and, disposed in a plane at right angles to that of the web and inclined to the. sideedge thereof, so as to project into said web, and 3 guide co-operates with each cutting blade for. guiding the web into the cutting blades,

- so that, upon retraction of the carbon-car- 'rier, the knives will trim off and throw aside portions of the edges of the web and separate the latter into sheets. This is done at the portion of the web which is not separated or spread by the carbon-holding blades, between which the web is threaded. Only the portion about to be typed is trimmed, the remainder of the web remaining united at the edges, thus guarding against relative Serial No; 743,894

justing the height of the cutting blade, and

also the distance which the blade projects into the web.

To obviate the necessity of frequently changing the blades, they may be circular in form so that progressive sharp .portions of the periphery may ,be utilized in place of the used, dull ones.

This application is a division of my 00- pending applicatiomserial N o. 448,04:7, filed February 26, 1921, now Patent No. 1,533,- 07 6, dated April 7, 1925.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a top plan View of the carboncarrier and shaving knives at both edges of the fan-fold web, with parts broken off.

Figure 2 is a longitudinal vertical section through Figure 1.

Figure 3 is a-- perspective view of one of the circular cutting knives in operative cutting relation with the web and its guide.

Figure 4 is a small diagrammatic side view illustrating the co-operative relations between carbon-carrier and cutter to the work-sheets and'platen. a I

In the drawings, 10 is a platen of the fanfold machineof thetypedisclosed in'the aforesaid WVernery and Smith patent. The platen forms part of the usual carriage (not shown) which isprovided with a rearward extension comprising side' rails 11'" Wl1l0h form runways for a carbon-carrier or ,car-

riage 13. A. web of work-sheets 20 is fedfrom any suitable source fromthe rear to manner to said bars 23, are interleaved be detachably connected therewith the screw 33 passing through the knife sh f the side ge carrier and its attached carbon sheets are free to move forwardly with said web during the lineespacing operationwhen the set of forms is being typed. When said set of forms'has been typed the platen is raised as described in said patent to Wernery and Smith and the forms may be straightened out. The carbon-carrier isthen retracted by pushing upon handle 25 extendingforwardly from the'carrier 13. The platen may then be lowered to printing position and the set of typed forms severed.-

The present invention Comprises means mounted on the carrier 13 for trimming the side edges of that portion of the webabout to be typed. For this purpose, the carboncarrier is provided -at each side with a rear- .ward extension 29, at the-extreme forward end offwhich is mounted a u-shaped guide 30 having a narrow horizontal opening 31 through which the web is designed to pass. The web is closely held or its plies are compacted by the guide, and emerges from the guide at the forward end thereof asa compact mass of sheets, which renders it easier to trim than if the layers of web were widely separated. Adjacent the forward end of the guide is therefore mounted a rearwardly- 30 facing circular knife 32 whose plane may be substantially perpendicular to the plane of the web, and. inclined with respect to,the edge of said web. The rearward edge of the knife comprising an inclined cutting 35 edge, to effect a: draw-cut along'the edge of the web, projects inwardly beyondthe edge ofthe web to a distance equal to the amount which it is desired to trim the edge of the web. The knife 32'is mounted upon .aegfamp and lodging in block 35. To enable the km e to be adjusted to such height that it meets the web properly as it emerges from the guide, the block 35 is adjustably mounted for vertical movement by means of a shouldered screw 36 passing into said block, through a slot 37 in a vertical standard 38 having a base portion, 39, whereby it is fastened on the carbon-carrier. It should be noted that,

' due to the inclined cutting edge of the knife 32, the widthof the margin cut off at each side ofthe fan-fold web depends uponthe vertical adjustment of the knife as well as 'uplon the horizontal adjustment thereof,

T e guides 30 may be adjustable sidewise tothe edges of the web (t0 guide said web laterally; The 'sid *guides (not shown) which are usually mounted on the"bar -21 may e used to assist in guiding-the web to 410 the platen. Inoperation, theknife 32),? having been adjusted vertically tomeetthe web as it emerges from the guide,- and -f.t0 trim the proper amountof the edfgeof'thewgb, will the web for a d sof a circular cutter traveli at the outer face a plane surface by'which the severed edge portions of the web will be directed outwardly over-the sides of the track for the carbon-carrier 13 at the rear of the carbon-carrier proper.

\Vhen a used portion ofthe cutting periphery becomes dull, the operator loosens the screw 33 and turns the knife to obtain a sharp portion, after which the knife may be fastened in place by said screw. The life of the knife is therefore multiplied and obviates frequent changing of knives, a particularly desirable feature in amachine subjected to heavy use.

It will be seen that the cutter in Figure 3 is adjustable up and down relatively to the web by means of the screw 36 passing through the slot 37 and threaded into the block 35, so that the active cutting edge may be lIlCllIH d from the front to the rear ofthe web.

2 Further it will be understood that the superposed layers bf thefan-fold web extend from'side toside, and that they are usually folded at-both sides of said web, as indidicated in Figure 1, in which case two eutters are provided, one at each side of the web. Sometimes, however, the layers are folded only along one edge of the web, in which case only one cutter is necessary. 1 In a machine of this'character so long as the fan-fold web is of a single or standard I width, the adjustment of the circular cutter to the edges of .the web may be permanent when 0 cc correctly set, and hence the oilcular changeable at all times without readjustment to the trinuning line along the edges of the web; and tin exchange of a dull for a new cutter can be readily made.

Variations may be resorted to within the scope of the invention, and portions of the claim: ,4, g I

1. In a typewriting mabhine having a carriage, and a platen over which a fanfold'web may be fed, the combination with a recipro v carbon 'nlays between the plies of the web,

rier and effective to trinro the sideed ges of the web,- said cutter, being adjustable about a fixed axis, whereby new cutting edges may be presented to the web, and means "to clamp said cutter stationary on the carrier, in adjusted position.

"2. In. a typewriting machine having a carnage and a platen over; which a fanrm of cutting element may be intermg carbon-carrier controllingimprovements may be used .without others,

Havmg thus described my invention, I

-with the carfold web with carbon inlays may be fed,

the combination with a carrier to retract the carbon inlays after'each printing operation, of a web side-fold cutter adjustably fined to the carrier and having a continuous cut: ting edge that may be positioned, at will,

to substitute a keen Web-cutting edge for a dull used edge.

3. In a typewriting machine having a carriage and 'a platen over: which a fanfold web ofpaper with carbon inlays may be fed, the combination with a reciprocating carrier to retract the carbon inlays after each printing operation, of an adjust-ably fixed cutter having an endless cutting edge,

mounted on the carrier and efl'ective to trimoff the side-edges of the web during the movement of the carrier to retract the carbon inlays, said cutter enabling presentation .of -any selected portion of said endless cutting edge to the web.

4. In a typewriting machine having a "revoluble platen over which a continuous fan-fold web of work-sheets with carbon inlays-may be'fed'aro'und the platen, the combination with a reciprocating carbon-carrier,

of edge-trimming means moving with the. carrier, includinga cutter having a cont1nuous or endless cutting edge, and a support upon which said cutter is held stationary,

said cutter being adjustable on the support whereby to present any'portiqn of said outting-edge to the web without readjustment to lt)he. predetermined trimming line on said we I 1 5. In a' typewriting machine having a carriage and a-revoluble platen over which I a continuous fan-fold web of work-sheets to t adjustably secured to the bracket, and a with carbon inlays may be fed, the combination with a reciprocating carrier for the carbon inlays to withdraw the carbon after the printing operation, of a'bracket secured 1e carrier'exterior to the web, a block knife'having a continuous cutting edge adj ustably clamped to the block, whereby any selected portion of said cutting edgemay be presented to the web and then clamped in such position.

6. In a typewrit'mg machine having a .,.carriage and a revoluble platen over which a continuous fan-fold web of work-sheets with carbon inlays'may be fed, the combination with a-carrier to withdraw the carbon inlays after the printing operation, of a' bracket secured to the carrier, a block slidably mounted on the bracket for vertical adjustments, and side-edge-trilmning meansadjustably fixed to the .block, including a cutter having an endless cutting edge that may be shifted, at will, to substitute a keenedge section for a dull one, the vertical ad ustment of said block effecting a variation in ,the angle of said cutting edge operating upon the web.-

7. In a typewriting machine having a carriage and a revoluble platen over which a fan-fold web of.. work-sheets with carbon fed, the combination with a reciprocable carbon-carrier for withdrawing carbonsheets from a used portion of the fan-fold web, of adjustable smooth-trimmingmeans mounted on said carbon-carrier at its rear y and rendered effective, upon a withdrawing operation of said carbfon-c'arrler, to cut off a portion of the foldediside edges of a section of said fan-fold web and leave smooth edges upon the disconnected plies, saidtrimming means including for each side at which trimming is to be effected a knife to cut all of the plies, the knife having an endless cutting edge and being in a plane perpendicular to the web, the knife also being inclined with respect to the side edges of the web,

any portion of said edge being positionable in adjusted cutting relation with the web, and means to permit the Width of the trimmed-off portion to be varied, including an adjustable vertical mounting for the knife, whereby the knife moves inwardly or outwardly with reference to the adjacent side of the web when said knife is being adjusted s ertically.

JOHN \VALDHEIM. 

